Descaling Instructions – Traditional, Coffee Boiler / Steam Thermoblock with Tank

Disclaimer:

This technical support is provided for information purposes only. 1st-line Equipment, LLC is not responsible for any injury or damages resulting from such information. Please note that we are unsure whether any solution can damage certain types of counter or sink materials.

Caution:

  • The cleaning detergents listed below are harmful if swallowed. If ingested, drink large amounts of water. In case of eye contact, flush thoroughly with water. Contact a physician in either case. Avoid excessive skin contact. KEEP OUT OF REACH FROM CHILDREN AND PETS.
  • You should also NOT use glass to capture any hot liquids from the machine during this process.

Purpose:

To remove limescale deposits, caused by magnesium and calcium, from the internal workings of the espresso machine.

Machine identity:

  • These instructions are provided for descaling coffee boiler/steam thermoblock espresso machines.
  • The espresso machine must be pulling water from a water tank and not from a direct water line connection.
  • Your espresso machine must have a single internal boiler that provides hot water for espresso extraction and hot water delivery through a hot water valve AND a separate thermoblock for steam.
  • Some examples of espresso machines in this class are Ascaso Steel DUO series machines, as well as the Quickmill Silvano. This procedure is not for heat exchangers or dual boilers.

Notes / Requirements before you start:

Descaling Coffee Boiler/Steam ThermoblockIf your instruction manual has specific instructions for descaling, we highly recommend using those instructions as the primary instructions. Use the following as secondary instructions.

  • Espresso machine – cold, powered off, plugged into an outlet
  • Descaling product – we sell Puly Cleaner.
    • Make sure not to get any solution on any of the machine finishes as it can ruin it permanently. If you do, completely wipe the solution off with a damp terry cloth.
  • Container/pitcher – for mixing the descaling solution
  • Cup(s) – 8 oz or larger, 1 – 3 max, for dispensing the descaling solution.

Instructions – Descaling Coffee Boiler/Steam Thermoblock:

  1. Firstly, empty the water tank and remove any water treatment devices (ie water softener, osmotic pack, etc) from the tank or intake hose.
  2. Follow instructions on the descaler product for a proper solution ratio.
  3. Pour the descaling solution into the water tank.
  4. Place a cup under the steam wand, hot water wand, and grouphead.
  5. Power the machine on. If there is a separate power switch for the steam thermoblock, power that switch on.
  6. Turn the coffee switch on. After 6-8 fluid ounces have been dispensed through the grouphead, turn the coffee switch off.
    • If applicable: Turn the hot water switch on. After 6-8 fluid ounces have been dispensed through the hot water wand, press the hot water switch off.
    • Ascaso Steel DUO: Turn the steam valve switch on. After 6-8 fluid ounces have been dispensed through the hot water wand, turn the steam valve switch off. If there is a separate power switch for the steam thermoblock, power to ‘on’.
    • Possible other machines: If there is a steam knob, rotate it open and engage the pump. After 6-8 fluid ounces have been dispensed through the hot water wand, rotate the steam knob to close. If there is a separate power switch for the steam thermoblock, power it on.
  7. Let the machine sit idle for no longer than 20 minutes. Longer periods can damage the machine.
  8. Rinse the cups and put them back in place.
  9. Empty and rinse the water tank.
  10. Wipe down the water tank hoses with a clean wet rag.
  11. Fill the tank with fresh water and place it into the machine.
  12. Lastly, repeat steps 5-6 to rinse out your espresso machine of the descaling solution. During this time, double the number of fluid fluid ounces indicated for proper rinsing.

 

The machine has successfully been descaled and rinsed.

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